Inclusion Criteria:

• • Eligible for treatment with cilta-cel per United States prescribing information (USPI) or locally approved label
• • Participant is suffering from serious or life threatening multiple myeloma per USPI (or locally approved label, respectively), and re-apheresis, re‑manufacturing, or other anti-myeloma directed therapies is not considered feasible or adequate per investigator
• • Has adequate general health status and organ function per investigator assessment and meets the criteria to receive cilta-cel out-of-specifications (OOS)
• • Meets the criteria to receive lymphodepleting chemotherapy
• • A woman of childbearing potential must have a negative highly sensitive serum (beta-human chorionic gonadotropin [beta-hCG]) pregnancy test during screening and prior to the first dose of cyclophosphamide and fludarabine

Exclusion Criteria:

• • History of active uncontrolled infection or condition where an administration of cilta-cel OOS constitutes serious health risk to the participant
• • Known allergies, hypersensitivity, or intolerance to the excipients of cilta-cel OOS including dimethyl sulfoxide (DMSO), dextran 40, or residual kanamycin per USPI
• • Hepatitis B infection
• • Hepatitis C infection defined as (anti hepatitis C virus [HCV] antibody positive or detectable HCV ribonucleic acid [RNA]) or known to have a history of hepatitis C
• • Seropositive for human immunodeficiency virus (HIV)
• • Uncontrolled autoimmune disease